Rock Identifier

Category

Igneous Rock

Browse igneous rock specimens identified by the Rock Identifier community.

Learn about Igneous Rock in the encyclopedia

Carbonatite

Carbonatite

Rock Gypsum

Rock Gypsum

Rock Salt

Rock Salt

Coral Rock

Coral Rock

Asphalt Rock

Asphalt Rock

Pyroxenite

Pyroxenite

Basalt

Basalt

Diorite

Diorite

Kimberlite

Kimberlite

Norite

Norite

Troctolite

Troctolite

Gabbro

Gabbro

Pumice (Pumice (Volcanic Rock)) — igneous

Pumice

Pumice (Volcanic Rock)

Granite (Felsic Plutonic Rock) — igneous

Granite

Felsic Plutonic Rock

Pumice or Vesicular Basalt/Scoria (water-worn) (Vesicular volcanic rock) — igneous

Pumice or Vesicular Basalt/Scoria (water-worn)

Vesicular volcanic rock

Greenstone Porphyry (Porphyritic Metavolcanic Rock) — igneous

Greenstone Porphyry

Porphyritic Metavolcanic Rock

Pumice or Scoria (Vesicular volcanic rock) — Igneous

Pumice or Scoria

Vesicular volcanic rock

Basalt (River Stone) (Mafic volcanic rock) — igneous

Basalt (River Stone)

Mafic volcanic rock

Basalt (Mafic Volcanic Rock) — igneous

Basalt

Mafic Volcanic Rock

Granodiorite Pebble (Granodiorite) — igneous

Granodiorite Pebble

Granodiorite

Amygdaloidal Basalt (Basalt (Igneous Volcanic Rock with secondary mineral infilling)) — igneous

Amygdaloidal Basalt

Basalt (Igneous Volcanic Rock with secondary mineral infilling)

Milky Quartz (with trace inclusions) (Silicon Dioxide (SiO2)) — mineral

Milky Quartz (with trace inclusions)

Silicon Dioxide (SiO2)

Basalt (Road Aggregate Specimen) (Aphanitic mafic volcanic rock) — igneous

Basalt (Road Aggregate Specimen)

Aphanitic mafic volcanic rock

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Granodiorite (Granodiorite (Intermediate plutonic rock)) — igneous

Granodiorite

Granodiorite (Intermediate plutonic rock)

Quartz Geode (with possible Manganese or Goethite coating) (Silicon Dioxide (SiO2)) — mineral

Quartz Geode (with possible Manganese or Goethite coating)

Silicon Dioxide (SiO2)

Smoky Quartz with Feldspar (Silicon Dioxide (SiO2) with Potassium Feldspar (KAlSi3O8)) — mineral

Smoky Quartz with Feldspar

Silicon Dioxide (SiO2) with Potassium Feldspar (KAlSi3O8)

Gneiss (High-Grade Metamorphic Rock) (Gneiss (primarily composed of Quartz, Feldspar, and Mica/Amphiboles)) — metamorphic

Gneiss (High-Grade Metamorphic Rock)

Gneiss (primarily composed of Quartz, Feldspar, and Mica/Amphiboles)

Basalt (Greenstone/Trap Rock) (Basalt (dominated by plagioclase feldspar and pyroxene)) — igneous

Basalt (Greenstone/Trap Rock)

Basalt (dominated by plagioclase feldspar and pyroxene)

Basalt (Mafic Volcanic Rock (composed of plagioclase, pyroxene, and olivine)) — Igneous

Basalt

Mafic Volcanic Rock (composed of plagioclase, pyroxene, and olivine)

Vesicular Basalt (Scoria) (Vesicular Basalt) — igneous

Vesicular Basalt (Scoria)

Vesicular Basalt

Riverstone (Gray Basalt) (Basalt (Maier-type or generic)) — igneous

Riverstone (Gray Basalt)

Basalt (Maier-type or generic)

Porphyritic Basalt (Aphanitic-Porphyritic Basalt) — igneous

Porphyritic Basalt

Aphanitic-Porphyritic Basalt

Basalt (Vesicular) (Basalt (Mafic volcanic rock)) — igneous

Basalt (Vesicular)

Basalt (Mafic volcanic rock)

Apache Tear (Obsidian (Hydrated Silica Glass)) — igneous

Apache Tear

Obsidian (Hydrated Silica Glass)

Kimberlite with Diamond (Kimberlite (Porphyritic Peridotite)) — igneous

Kimberlite with Diamond

Kimberlite (Porphyritic Peridotite)

Pink Granite (Granite (Alkali Feldspar Granite)) — igneous

Pink Granite

Granite (Alkali Feldspar Granite)

Vesicular Basalt (Basalt (with vesicular texture)) — igneous

Vesicular Basalt

Basalt (with vesicular texture)

Quartz (Milky/Common Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Common Quartz)

Silicon Dioxide (SiO2)

Granodiorite (foreground) and Rose Quartz (background) (Granodiorite / Quartz (SiO2)) — igneous

Granodiorite (foreground) and Rose Quartz (background)

Granodiorite / Quartz (SiO2)

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz Vein in Host Rock (Silicon Dioxide (SiO2)) — mineral

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Greenish rock with white veins, possibly epidote or chlorite bearing rock with quartz/calcite veins (Altered mafic rock or Epidosite) — metamorphic or igneous alteration

Greenish rock with white veins, possibly epidote or chlorite bearing rock with quartz/calcite veins

Altered mafic rock or Epidosite

metamorphic or igneous alteration

Quartz (Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Blue Quartz (Silicon Dioxide (SiO2) with inclusions) — mineral

Blue Quartz

Silicon Dioxide (SiO2) with inclusions

Clear Quartz Crystal (Quartz (Silicon Dioxide - SiO2)) — mineral

Clear Quartz Crystal

Quartz (Silicon Dioxide - SiO2)

Mineral and Rock Collection (Assorted) (Mixed collection including Quartz (SiO2), Jasper (SiO2 with impurities), Rose Quartz, and Aventurine) — mineral

Mineral and Rock Collection (Assorted)

Mixed collection including Quartz (SiO2), Jasper (SiO2 with impurities), Rose Quartz, and Aventurine

Granite (Granite (composed primarily of Quartz, Feldspar, and Mica)) — igneous

Granite

Granite (composed primarily of Quartz, Feldspar, and Mica)

Vesicular Basalt with Siltstone (Mafic Volcanic Rock (Basaltic Composition)) — igneous

Vesicular Basalt with Siltstone

Mafic Volcanic Rock (Basaltic Composition)

Diabase (Trap Rock) (Diabase (also known as Dolerite)) — igneous

Diabase (Trap Rock)

Diabase (also known as Dolerite)

Granite (Granite (Phaneritic Quartz-Feldspar Plutonic Rock)) — igneous

Granite

Granite (Phaneritic Quartz-Feldspar Plutonic Rock)

Porphyry (Porphyritic Rhyolite/Andesite) — igneous

Porphyry

Porphyritic Rhyolite/Andesite

Gneiss (Foliated Metamorphic Rock) — metamorphic

Gneiss

Foliated Metamorphic Rock